Connection with dry batteries.



E. ARMELIN.

CONNECTION WITH DRY BATTERIES. APPLICATION FILED SEPT. 14. 1918.

Patented Apr. 8,1919.

EM ears 1 EDOUARD ARMELIN, OF SOUTH WOODFORD, ENGLAND.

CONNECTION WITH DRY BATTERIES.

Specification of Letters Patent.

Patented Apr. 8, 1919.

Application filed September 14, 1918. Serial No. 254,114.

nection with Dry Batteries, of which the following is a specification.

My invention, relates to dry batteries and to that class of battery, such as is employed in connection with electric torches and the like, and comprising two or more cells which are connected together in series in a paper or like case or cartridge.

In such batteries as heretofore made, the usual practice is to place'the two or more cells composing a battery, =loosely in the are left open, the result being that there is a liability of the cells falling out of the case or cartridge, and of becoming separated from one another thereby breaking the electrical connection between them. In somecases to obviate this defect the adjacent terminals of the individual cells are permanently connected by means of a piece of flexible wire, but this construction is expensive, requires skilled labor and is not altogether satisfactory.

') Now, according to my invention, the object of which is to provide simple and eflicient means for obviating the above described difiiculties, I insert the two or more cells loosely in the paper or like case or carit projects somewhat from either end ofthe inserted cells, the projecting ends be--.

- cnds of the case or cartridge; for example, I may introduce the end into a tubular tool having one or more radially arranged pins agalnst which the end of the cartridge bears, the tool and cartridge being then caused to rotate relatively to one another,

tridge, which is made of such a length, that.

so' that the end of the latter is turned or spun over when applied against the pin or pins.

To enable my invention to be fully understood I will describe it by reference to the accompanying drawing, in which Figure 1 is a sectional elevation of a battery construction according to my invention.

Fig. 2 is a, view similar to Fig. 1 but showing the cartridge before the ends are turnedor spun over.

Fig. 3 is a plan view of a convenient tool for spinning over the ends of the case; and Fig. i is a, sectional elevation thereof. a and b'indicate the two dry cells which constitute'the battery, and 0 is the paper or like case or cartridge into which the two paper cartridge or case, the ends of which said cells a and bare introduced, with their opposing terminals in electrical contact.

The case or cartridge 0 is of such a length that its ends project beyond the extremelindrical shank e one end of which is hollow, so as to form a tubular recess f with an. annular groove 9 at .its bottom. Extending radially through the annular oove q are two pins h. The tool is employed as follows, that is to say, it is fixed in a lathe such that :it can be rotated and the end of the case 0 is inserted into the recess f which is of a diameter to recelve 1t,

its extremity extending into the annular groove 9. If, now, the case 0 be pressed against the radial rotating pins 72., the latter will turn or spin over the end thereof in the manner above described.

By my invention not only is the appearance of the finished article enhanced, but

the durability and lastingpower of the.

cells is also increased, particularly in cases where the spinning operation is effected ing having open ends, and a plurality of under heat or the ends of the proper-carcells located in said casing, the casing hav- 10 tridge or case have ben previously treated ing its tubular extremities bent inwardly with paraffin wax or the like, as the saidto form shoulders which engage opposite 5 spinning operation hermetically seals the ends of two cells and maintain the cells in baatleljy. electrical contact.

A dry battery comprising a tubular cas- EDOUARl) ARMELIN. 

